Abaku

Players place digit tiles on a shared grid to form intersecting arithmetic equations; sequences of digits are read as math statements rather than words or symbols. Tiles are placed horizontally or vertically, and every new sequence created by a placement must evaluate to a true equation using operations such as addition, subtraction, multiplication, division, squares, cubes, and integer roots. On a turn, a player adds one or more tiles and scores for all valid equations formed by that placement. Certain board spaces modify tile or equation values. The game supports solo or multiplayer play for up to four players and awards victory to the highest scorer.

Players: 1–4 best 2
Playing time: 30–60 min
Age: 8+
Complexity: 2.5 / 5